"Assad might have used chemical weapons this time, but he's been indiscriminately targeting civilians for years".
"We will not stand by passively while Assad, backed by Russian Federation and Iran, ignores global law", White said.
Defense Secretary James Mattis said Friday night that the U.S. was expecting a disinformation campaign by those aligned with the Assad regime.
"We would have preferred an alternative path, but in this case there was none", May said. "But on this occasion, there is none".
A statement released Friday by French President Emmanuel Macron said that a "red line set by France in May 2017 has been crossed".
"I urge all Member States to show restraint in these unsafe circumstances and to avoid any acts that could escalate the situation and worsen the suffering of the Syrian people", he said.
American military spokesmen have also been insistent that "No Syrian weapon had any effect on anything we did".
Trump, while addressing the nation on Friday night, said the joint strike with France and the United Kingdom was now underway.
McKenzie said 105 USA and allied missiles were fired, of which 66 were Tomahawk cruise missiles launched from aboard three Navy ships and one Navy submarine.
Despite severely damaging the infrastructure with the strikes, McKenzie said the Pentagon would not rule out that the Assad government still had capability to use such weapons again.
"I have repeatedly expressed my deep disappointment that the Security Council failed to agree on a dedicated mechanism for effective accountability for the use of chemical weapons in Syria", he added. "Those responsible must be brought to justice.".
A statement from the British Ministry of Defense said that four Royal Air Force Tornado GR4's were used in the strikes, launching Storm Shadow missiles at a "former missile base - some 15 miles west of Homs".
Trump said that he chose to take action because last weekend's action by Bashar Al-Assad "was a significant attack against his own people", and "not the actions of a man, they are crimes of a monster instead".
"The objective of our actions tonight is to establish a strong deterrent against the production, spread, and use of chemical weapons", he said.
Allied missiles struck at the heart of the Syrian chemical weapons arsenal, aiming to punish the Assad government for a suspected poison gas attack against civilians and deter the possible future use of such banned weapons. The attack left about 70 people dead.
"The barbaric aggression ...will not affect in any way the determination and insistence of the Syrian people and their heroic armed forces", state media quoted an official ministry source as saying.
Paris and its allies warned Russian Federation beforehand because they wanted to avoid any escalation of the Syrian conflict, Parly said.
"The honorable can not be humiliated", said a post from the Twitter account maintained by Assad's office shortly after the attack.
Damascus, with key allies Russian Federation and Iran, have lambasted reports of the suspected gas attack as bogus.
"We're not cooperating with them in Syria".